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Keywords: viscoplasticity
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Journal Articles
Article Type: Research-Article
J. Eng. Mater. Technol. January 2020, 142(1): 011001.
Paper No: MATS-18-1342
Published Online: May 30, 2019
...Bhasker Paliwal; Youssef Hammi; Mei Chandler; Robert D. Moser; Mark F. Horstemeyer A new dynamic strain rate-dependent elasto-viscoplastic damage constitutive model for ultrahigh-performance concrete (UHPC) is developed by incorporating Duvaut–Lions viscoplasticity generalized to multisurface...
Journal Articles
Article Type: Bridging Microstructure, Properties, And Processing Of Polymer-Based Advanced Materials
J. Eng. Mater. Technol. January 2012, 134(1): 010910.
Published Online: December 21, 2011
... expression, T α , is extensively discussed. Then, emphasis is put on the stress-strain behavior in tension and compression over the low deformation range covering the elastic, anelastic, and viscoplastic response. The reported data depend, as expected, on temperature and strain rate and also, markedly...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. October 2011, 133(4): 041011.
Published Online: October 20, 2011
...Ardeshir H. Tehrani; Rashid K. Abu Al-Rub In this study, damage evolution in a nanocomposite containing the polymethyl methacrylate polymer (PMMA) embedded with silicate nanoclay particles is simulated by using a nonlinear viscoelastic, viscoplastic, and viscodamage constitutive model...
Journal Articles
Article Type: Multi-Physics Approaches For The Behavior Of Polymer-Based Materials
J. Eng. Mater. Technol. July 2011, 133(3): 030906.
Published Online: July 5, 2011
... under shear loadings. 09 05 2010 10 03 2011 05 07 2011 05 07 2011 adhesives cracks elastoplasticity shear modulus shear strength stress analysis tensile strength viscoplasticity adhesive testing joint design stress analysis edge effects nonlinear behavior...
Journal Articles
Article Type: Multi-Physics Approaches For The Behavior Of Polymer-Based Materials
J. Eng. Mater. Technol. July 2011, 133(3): 030904.
Published Online: July 1, 2011
... and viscoplastic deformation stages. However, little quantitative information about the void evolution with the drawing level is to date available in the literature. The objective of this work is to quantify cavitation mechanisms in neat and calcium carbonate-filled high-density polyethylene (HDPE) subjected...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. July 2011, 133(3): 031002.
Published Online: June 24, 2011
... and a unified viscoplasticity model at the global level, respectively. The stress-assisted oxygen diffusion was driven by the gradient of hydrostatic stress in terms of pressure factor. Heterogeneous deformation presented at the grain level imposes a great influence on oxygen diffusion at 750 ∘ C and above...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. July 2011, 133(3): 031003.
Published Online: June 24, 2011
... elements were employed to prevent penetration at the glass–container interface. Roughness of these contact surfaces was modeled as an equivalent air gap with temperature-dependent conductivity in the thermal model. The stress model features elastic-viscoplastic constitutive equations developed based...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. April 2011, 133(2): 021010.
Published Online: March 7, 2011
... prediction of stresses and deformations of UHMWPE components under service conditions is essential for the design and analysis of these components. This, in turn, requires a cyclic, viscoplastic constitutive model that can simulate cyclic responses of UHMWPE under a wide variety of uniaxial and multiaxial...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. April 2011, 133(2): 021001.
Published Online: March 3, 2011
...P. Grammenoudis; D. Reckwerth; Ch. Tsakmakis Anisotropic viscoplasticity coupled with anisotropic damage has been modeled in previous works by using the energy equivalence principle appropriately adjusted. Isotropic and kinematic hardenings are present in the viscoplastic part of the model...
Journal Articles
Article Type: Shear Behavior And Related Mechanisms In Materials Plasticity
J. Eng. Mater. Technol. January 2009, 131(1): 011108.
Published Online: December 22, 2008
..., the texture was simulated at different angular positions with the help of the viscoplastic self-consistent model. The changes in the textures due to DRX were explained in terms of the Taylor factor. Finally, the texture evolution was interpreted with the help of the behavior of ideal orientations...
Journal Articles
Article Type: Shear Behavior And Related Mechanisms In Materials Plasticity
J. Eng. Mater. Technol. January 2009, 131(1): 011105.
Published Online: December 19, 2008
..., “Modelling Adiabatic Shear Banding Via Damage Mechanics Approach,” Arch. Mech., 55, pp. 3–38 ; 2005, “Adiabatic Shear Banding Induced Degradation in a Thermo-Elastic/Viscoplastic Material Under Dynamic Loading,” Int. J. Impact Eng., 32, pp. 285–320 ). The second novel contribution concerns numerical solution...
Journal Articles
Article Type: Technical Briefs
J. Eng. Mater. Technol. October 2008, 130(4): 044501.
Published Online: August 26, 2008
... of Viscoplasticity,” Arch. Mech., 27, pp. 857–868 ), the viscoplasticity, and the J 2 plasticity can all be revealed and recovered within the multiscale thermodynamic framework. 08 07 2007 12 02 2008 26 08 2008 irreversible thermodynamics viscoplasticity plastic potential multiscale...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. April 2008, 130(2): 021020.
Published Online: March 27, 2008
...Joel V. Bernier; Nathan R. Barton; Jaroslaw Knap In this study, a multiscale material model is employed to simulate two metal forming processes: 2D plane strain compression and a 3D biaxial bulge test. A generalized Taylor-type polycrystal model is employed to describe the fine scale viscoplastic...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. April 2008, 130(2): 021010.
Published Online: March 13, 2008
... reinforced plastics hardening softening stress-strain relations voids (solid) composite polymer PMMA void viscoplasticity finite elements damage The cost of a composite structure lies for the most part in manufacturing. An actual manufacturing process seldom produces composite...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. April 2008, 130(2): 021006.
Published Online: March 12, 2008
...Youliang He; Paul R. Dawson; Donald E. Boyce The evolution of voids (damage) in friction stir welding processes was simulated using a void growth model that incorporates viscoplastic flow and strain hardening of incompressible materials during plastic deformation. The void growth rate is expressed...
Journal Articles
Article Type: Technical Papers
J. Eng. Mater. Technol. July 2007, 129(3): 349–355.
Published Online: April 9, 2007
...-strain relations temperature distribution finite element analysis viscoplasticity cracks machine bearings steel hot forging process bearing steel stress-strain curve hot compression test hot tensile test computer controlled servo hydraulic testing machine rigid-thermoviscoplastic finite...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. October 2006, 128(4): 527–536.
Published Online: June 30, 2006
...Erik Marklund; Janis Varna; Lennart Wallström In tensile tests the flax/polypropylene composites clearly show nonlinear behavior in loading and hysteresis loops in unloading. In creep tests performed at different load levels the response was nonlinear viscoelastic, and after recovery, viscoplastic...
Journal Articles
Article Type: Technical Papers
J. Eng. Mater. Technol. April 2007, 129(2): 207–210.
Published Online: June 26, 2006
... optimum thickness and to test different thermal loads in order to optimize the industrial process and to improve the tool’s life. 11 09 2003 26 06 2006 stress analysis finite element analysis thermal stresses life testing thermocouples pyrometers elastoplasticity viscoplasticity...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. October 2006, 128(4): 564–571.
Published Online: May 30, 2006
... the aforementioned creep and relaxation behavior have been made by modifying the existing formulation of the viscoplasticity theory based on overstress, which is a constitutive state-variable based model. A modified, single-element standard linear solid serves as a suitable descriptor of the model. Linking of two...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. October 2006, 128(4): 572–578.
Published Online: May 11, 2006
...Ozgen U. Colak; Necmi Dusunceli The viscoelastic and viscoplastic behaviors of high density polyethylene (HDPE) under uniaxial monotonic and cyclic loading are modeled using the modified viscoplasticity theory based on overstress (VBO). The viscoelastic modeling capabilities of the modified VBO...